Any advice about how to start my own web store?

Hi everyone I am a newbie to Salehoo and this is my first post.
I was wondering if I could get some advice on how to start my own store online. Should I create my own website or use other resources like a turnkey website with dropshippingwholesalers.com (Is this a reliable source). I've also seen SiteBuild it - would this be a good start.
Also, to sell online do I need to get any type of licenses or registering the business is enough. Lastly, does anybody have any suggestions for a good niche to get started in. How do I research a niche.
Thanks for the help. :lol:

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